He was 18/5 over 300 hands or so, basically I'm putting him on AK/AQ and I don't think he can call a check raise all in on the turn with those hands. AAA is definitely possible here but I think AK/AQ is more likely. How does it look?

Party Poker No-Limit Hold'em, $ Hero (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP ($276.50)
CO ($344.23)
Button ($271.78)
SB ($447.75)
Hero ($207.55)
UTG ($197)

Preflop: Hero is BB with 6, 7. SB posts a blind of $1.
1 fold, MP raises to $8, 2 folds, SB (poster) calls $7, Hero calls $6.

Flop: ($24) A, 4, 3 (3 players)
SB checks, Hero checks, MP bets $17, SB folds, Hero calls $17.

Turn: ($58) 2 (2 players)
Hero checks, MP bets $35, Hero raises $182.55 (All-In)